Impact of steric interactions on the helical transition in assemblies of discotic molecules

J.A.M. Gestel, van, P.P.A.M. Schoot, van der

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1 Citation (Scopus)

Abstract

We investigate theoretically the effect of excluded-volume interactions on the helical configurational transition of supramolecular assemblies in solutions of chiral disklike molecules. To this end, we set up a second-virial theory within the context of the helical self-assembly of rodlike objects. We find that interaggregate interactions shift both the helical-transition point and the sharpness of the transition. For realistic values of the model parameters, the helical-transition temperature shifts by several degrees, and the more so the higher the concentration of assembling material. The mean aggregation number is also affected by the interactions, albeit only by a modest amount, unless the solution becomes very concentrated.
Original languageEnglish
Pages (from-to)446-452
JournalLangmuir
Volume22
Issue number1
DOIs
Publication statusPublished - 2006

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